JPS58177099A - Diaphragm for speaker - Google Patents
Diaphragm for speakerInfo
- Publication number
- JPS58177099A JPS58177099A JP5994782A JP5994782A JPS58177099A JP S58177099 A JPS58177099 A JP S58177099A JP 5994782 A JP5994782 A JP 5994782A JP 5994782 A JP5994782 A JP 5994782A JP S58177099 A JPS58177099 A JP S58177099A
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- speaker
- magnesium alloy
- young
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は耐熱マグネシウム合金を用いることにより、大
入力に於ても高域限界周波数附近に於ても周波数特性が
安定するスピーカ用振動板に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a speaker diaphragm that uses a heat-resistant magnesium alloy and has stable frequency characteristics even at large inputs and near the high-frequency limit frequency.
一般にスピーカ、マイクロホン、ヘッドホン等音響機器
に於て、電気−音響変換用振動系は能率を高める為に軽
量化が計られて来た。特に振動板の桐材としては比重が
小さいこと、ヤング率が大きいことが要求されている。Generally, in audio equipment such as speakers, microphones, and headphones, efforts have been made to reduce the weight of electro-acoustic conversion vibration systems in order to increase efficiency. In particular, paulownia wood for diaphragms is required to have a low specific gravity and a high Young's modulus.
従来、低比重で高ヤング率のものとしてマグネシウム合
金がα１されて来た。マグネシウム合金はその比重が他
の金属に比較して小さく、内部ロスが大きいことにより
、スピーカ用振動板Ｋ ＪＩ！ｉＬでいる。しかしなが
ら従来のマグネシウム合金振動板例えばマグネシウム合
金として実用上よく几）′ＩＩされているＡＳＴＭＡ２
３１Ｂ合金の亜鉛３０車量％、ジルコニウム０６重量％
を含むマグネシウム合金を用いた振動板は第１表部度と
ヤング率関係表に示すとと＜、１５０〜２００℃で極端
にヤング率が低下する。故に振動板のボイスコイル貼着
部附近の温度が約１５０℃以上になるようなスし一カで
は第１図に示す周波数特性図に於て、火線人力１５Ｗ１
点線人力ＩＷのいづれも高域限Ｉｌｌ １．！、１波数
附近に於て周波数特性が入力によって変化し、５０００
Ｈｚ附近からボイスコイル貼着部附近の温度上昇の影
響により、ステイフネス低下ＪＪ ｔに響かあり、特に
１０ＫＨｚ以上で特別にその影響により音［Ｅがくずれ
、音質が安定しない欠点があった。Conventionally, magnesium alloys have been used as materials with low specific gravity and high Young's modulus. Magnesium alloy has a lower specific gravity than other metals and has a large internal loss, which makes it suitable for speaker diaphragms K JI! I'm iL. However, conventional magnesium alloy diaphragms, such as magnesium alloys, are practically well-recognized according to ASTMA2.
31B alloy zinc 30% by weight, zirconium 06% by weight
The Young's modulus of a diaphragm using a magnesium alloy containing 150° C. and 200° C. is extremely low as shown in the first table showing the relationship between temperature and Young’s modulus. Therefore, in the case where the temperature near the voice coil attachment part of the diaphragm is about 150℃ or higher, the frequency characteristic diagram shown in Fig.
All of the dotted line human power IW are high range limit Ill 1. ! , the frequency characteristics change depending on the input near 1 wave number,
Due to the influence of temperature rise from around Hz to the vicinity of the voice coil attachment part, the stiffness decreases, and especially at frequencies above 10 KHz, the sound [E] becomes distorted due to this influence, resulting in unstable sound quality.
本発明は上記欠点を取除く為に発明されたもので、トリ
ウム０．７５重量％、亜鉛０５重駄％、ジルコニウム０
６重量％を含むマグネシウム合金からなることを特長と
するスピーカ用撮動板である本発明マグネシウム合金は
上記のような構成になっているので、耐熱マグネシウム
合金であり、第１表の温度とヤング率関係表に示すごと
く、１５０〜２００℃でもヤング率が殆んど低下しない
０故に振動板のボイスコイル貼着部附近の温度が約１５
０℃以上になるようなスピーカでも第２図に示す周波数
特性図に於て、実線人力１５Ｗ１点線人力ＩＷのいづれ
も１０〜２０ＫＨｚに於て音用のくずれがなく、大入力
のスピーカに於て、高域限界周波数附近に於て、周波数
特性が安定している。The present invention was invented to eliminate the above-mentioned drawbacks, and includes 0.75% thorium, 05% zinc, and 0% zirconium.
The magnesium alloy of the present invention, which is a photographing plate for a speaker and is characterized by being made of a magnesium alloy containing 6% by weight, has the above-mentioned structure, and is therefore a heat-resistant magnesium alloy, and the temperature and Young's temperature shown in Table 1 are As shown in the ratio relationship table, the Young's modulus hardly decreases even at 150 to 200°C, so the temperature near the voice coil attachment part of the diaphragm is about 15°C.
Even with speakers whose temperature exceeds 0℃, in the frequency characteristic diagram shown in Figure 2, there is no distortion in the sound at 10 to 20 KHz for both the solid line of human power 15W and the dotted line human power IW, and for speakers with large inputs. , the frequency characteristics are stable near the high-frequency limit frequency.
本発明スピーカ用振動板は低比重でヤング率が高く、内
部ロスが大きく、特に耐熱マグネシウム合金である為１
５０℃以Ｆの高熱になってもヤング率が殆んど変らない
特長を有するもので、工業１−有益な発明である。The speaker diaphragm of the present invention has a low specific gravity, a high Young's modulus, a large internal loss, and is especially made of a heat-resistant magnesium alloy.
This invention has the feature that the Young's modulus hardly changes even when exposed to high temperatures of 50° C. or higher, and is an industrially useful invention.
第１図は従来品の周波数特性図 第２図は本発明品の周波数特性図 特許出願人 オンキヨー株式会社 含 １（２） Ｌ 矢２図 □Ｈ先 Figure 1 is a frequency characteristic diagram of the conventional product. Figure 2 is a frequency characteristic diagram of the product of the present invention. Patent applicant: Onkyo Corporation Including 1 (2) L Arrow 2 diagram □H destination
Claims (1)
ウム０．６重量％を含むマグネシウム合金からなること
を特長とするスピーカ用振動板。- A speaker diaphragm characterized by being made of a magnesium alloy containing 075% by weight of thorium, 05% by weight of zinc, and 0.6% by weight of zirconium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5994782A JPS58177099A (en) | 1982-04-09 | 1982-04-09 | Diaphragm for speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5994782A JPS58177099A (en) | 1982-04-09 | 1982-04-09 | Diaphragm for speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58177099A true JPS58177099A (en) | 1983-10-17 |
Family
ID=13127844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5994782A Pending JPS58177099A (en) | 1982-04-09 | 1982-04-09 | Diaphragm for speaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58177099A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3535205A1 (en) * | 1984-10-03 | 1986-04-30 | Fujikura Ltd., Tokio/Tokyo | SPEAKER MEMBRANE |
| CN105611467A (en) * | 2016-01-01 | 2016-05-25 | 苏州井利电子股份有限公司 | Voice coil wire with long service life for non-circular loudspeaker |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4861129A (en) * | 1971-11-30 | 1973-08-27 | ||
| JPS56120293A (en) * | 1980-02-27 | 1981-09-21 | Onkyo Corp | Diaphragm plate for speaker |
-
1982
- 1982-04-09 JP JP5994782A patent/JPS58177099A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4861129A (en) * | 1971-11-30 | 1973-08-27 | ||
| JPS56120293A (en) * | 1980-02-27 | 1981-09-21 | Onkyo Corp | Diaphragm plate for speaker |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3535205A1 (en) * | 1984-10-03 | 1986-04-30 | Fujikura Ltd., Tokio/Tokyo | SPEAKER MEMBRANE |
| DE3535205C2 (en) * | 1984-10-03 | 1994-09-01 | Sony Corp | Speaker cone |
| CN105611467A (en) * | 2016-01-01 | 2016-05-25 | 苏州井利电子股份有限公司 | Voice coil wire with long service life for non-circular loudspeaker |
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